BIKDS OF NOKTH AND MIDDLE AMEEICA. 468 



Atlapetcs (:hryxo]>o;/on CAB\yii>, Journ. fiir Orn., I860, 414 (Costa Rica) ; 1861, 94 



(do.). 

 Buarremon ulbinuclms (not Emhernagra aUnmicha Lafresnaye and D'Or]:)igny) 

 Salvin and Sclater, Ibis, 1860, 274 (Coban, Guatemala). 



A.TLAPETES ALBINUCHA (D'Orbigny and Lafresnaye). 

 WHITE-NAPED SPARROW. 



Similar in coloration of upper parts to ^1. gutturalis^ but under 

 parts, except sides and flanks, entirely yellow. 



Adults {sexes alike). — Pileum, hindneck, and sides of head and 

 neck black, the first divided medialh^ by a stripe of dull white, begin- 

 ning on anterior portion of crown and extending posteriorly to the 

 hindneck; rest of upper parts blackish slate color (sometimes tinged 

 with olive posteriorly), the greater and middle wing-coverts indis- 

 tinctly tipped with paler slate or slate-gra}-; malar region (except 

 upper anterior portion), chin, throat, chest, breast, and abdomen deep 

 lemon or gamboge ^^ellow (paler on a))domen and anal region); sides 

 and flanks deep ■olive-gra3'ish; thighs and under tail-coverts lighter 

 olive-grayish, tinged with light yellow: under wing-coverts grayish 

 white; bill black; legs and feet dark brown or blackish. 



Young. — Similar above to adults but browner, the head and neck 

 dark sooty, instead of soot}^ black; the white head-stripe indistinct, 

 confined to occiput and nape, consisting of partially coalesced dull 

 brownish whitish streaks; malar region, chin, and throat pale canarj^ 

 yellow, the first faintly mottled with dusky: median under parts 

 primrose yellow, shading into brownish olive on sides, flanks, and 

 under tail-coverts, the chest and breast rather heavily streaked with 

 dusky, the first, together with sides of breast, suffused with olive. 



Adult male.— l^ength i^km^), 172. 72-l!)0. .50 (180.34); wing, 71.88- 

 79.25 (76.15); tail, 80.77-88.90 (85.60); exposed culmen, 11.73-15.21 

 (11.99); depth of bill at base. 8.89-9.65 (9.11): tarsus, 27.91-30.23 

 (28.96); middle toe, 17.27-20.32 (18.80).^ 



Adidt female.— Length, (skins), 157.18-170:18 (163.83); wing, 

 72.39-75.69 (73.91); tail, 73.66-82.55 (77.98): exposed culmen, 14.73; 

 depth of bill at base, 8.89; tarsus. 26.92-28.45 (27.69); middle toe, 

 16.51-18.29 (17.27).- 



Southern Mexico, in states of Vera Cruz (Orizaba: Jico: Jalapa), 

 Puebla (Teziutlan; Huachinango), Oaxaca (Totontepec), and Chiapas 

 (Tumbala: San Cristobal): Colombia (Bogota. Cartagena, etc.). 



Emhernagra albinucha Lafresnaye and D'Orbigxy, Rev. Zool., 1838, 165 (near 



Cartagena, Colombia; Paris Mus.). 

 E.\_mbernagra] albinucha Gray, Gen. Birds, ii, 1844, 361. 

 IBuarremori] a76mifc/iO Bonaparte, Consp. Av., i, 1850, 484 (Mexico). 



^ Five specimens. ^ Two specimens. 



